Surgical access device with self-inflating balloon
A surgical access device has a cannula tube with a collar coupled to a proximal region of the cannula tube. A balloon is attached to the cannula tube. The collar includes a receptacle and an inflater is insertable into the receptacle. The inflater has a body with a chamber and a first compound. A cap is attached to one end of the body and has a cavity containing a second compound. A membrane is disposed between the body and the cap and is configured to keep the first and second compounds separate. A button extends through an opening of the cap and a piston is coupled to the button. The piston includes a spike extending away from the button and is translatable in the cap between a rest position and an actuated position. The actuated position is defined by a portion of the spike penetrating the membrane such that the first compound interacts with the second compound generating a gas that is communicated to the balloon via a groove of the cannula tube.
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The present disclosure generally relates to a surgical access device. In particular, the present disclosure relates to a surgical access device having a self-inflating balloon.
BACKGROUNDIn minimally invasive surgical procedures, including endoscopic and laparoscopic surgeries, a surgical access device permits the introduction of a variety of surgical instruments into a body cavity or opening. A surgical access device (e.g., a cannula or an access port) is introduced through an opening in tissue (e.g., a naturally occurring orifice or an incision) to provide access to an underlying surgical site in the body. The opening is typically made using an obturator having a blunt or sharp tip that may be inserted through a passageway of the surgical access device. For example, a cannula has a tube of rigid material with a thin wall construction, through which an obturator may be passed. The obturator is utilized to penetrate a body wall, such as an abdominal wall, or to introduce the surgical access device through the body wall, and is then removed to permit introduction of surgical instruments through the surgical access device to perform the minimally invasive surgical procedure.
Minimally invasive surgical procedures, including both endoscopic and laparoscopic procedures, permit surgery to be performed on organs, tissues, and vessels far removed from an opening within the tissue. In laparoscopic procedures, the abdominal cavity is insufflated with an insufflation gas, e.g., CO2, to create a pneumoperitoneum thereby providing access to the underlying organs. A laparoscopic instrument is introduced through a cannula into the abdominal cavity to perform one or more surgical tasks. The cannula may incorporate a seal to establish a substantially fluid tight seal about the laparoscopic instrument to preserve the integrity of the pneumoperitoneum. The cannula, which is subjected to the pressurized environment, e.g., the pneumoperitoneum, may include an anchor to prevent the cannula from backing out of the opening in the abdominal wall, for example, during withdrawal of the laparoscopic instrument from the cannula.
SUMMARYA surgical access device according to the present disclosure has a cannula tube with a collar coupled to a proximal region of the cannula tube. The collar includes a receptacle. A balloon is attached to the cannula tube and an inflater is insertable into the receptacle. The inflater includes a body having a chamber containing a first compound, a cap attached to one end of the body with a cavity containing a second compound, and a membrane disposed between the body and the cap. The membrane is configured to keep the first and second compounds separate. A button extends through an opening of the cap and a piston is coupled to the button. The piston includes a spike extending away from the button. The piston is translatable in the cap between a rest position and an actuated position. The actuated position is defined by a portion of the spike penetrating the membrane such that the first compound interacts with the second compound generating a gas that is communicated to the expandable balloon via a groove of the cannula tube.
In an aspect of the present disclosure, the inflater may further include a spring configured to bias the piston towards the rest position.
In aspects of the present disclosure, the surgical access device may further include an O-ring disposed between the button and the cap.
In yet another aspect of the present disclosure, the surgical access device may further include a filter attached to a distal end of the body and the filter is configured to block the flow of particulate matter.
In a further aspect of the present disclosure, the receptacle may include an orifice extending through an outer wall thereof.
In aspects of the present disclosure, the inflater may be threadably coupled with the receptacle such that in a first orientation the orifice is covered by a portion of the body and rotation of the inflater to a second orientation uncovers the orifice.
In another aspect of the present disclosure, the first compound may be baking soda, the second compound may be citric acid, and the gas may be carbon dioxide.
A surgical access device according to another aspect of the present disclosure includes a cannula tube with a balloon coupled to the cannula tube. The balloon has an expandable portion located in a distal region of the balloon. A collar is disposed in a proximal region of the cannula tube and includes a receptacle. An inflater has a body with a first end that is insertable into the receptacle and contains a first compound. A cap is attached to a second end of the body and contains a second compound. A membrane is disposed between the body and the cap. A button has a portion thereof extending through an opening of the cap. A piston having a spike is coupled to the button and translatable along a longitudinal axis of the inflater. The piston is translatable between a rest position and an actuated position. The actuated position is defined by the spike piercing the membrane allowing the first and second compounds to react and generate a gas that is communicated to the expandable portion of the balloon.
In aspects of the present disclosure, the cannula tube may include a groove in an outer surface thereof that fluidly couples the expandable portion of the balloon and the collar.
In an aspect of the present disclosure, the first compound may be baking soda and the second compound may be citric acid.
In a further aspect of the present disclosure, the first compound and the second compound may react to produce carbon dioxide gas.
In yet another aspect of the present disclosure, the surgical access device may further include a spring disposed between the body and the cap. The spring may be configured to bias the piston towards the rest position.
In aspects of the present disclosure, the surgical access device may further include a filter coupled to the first end of the body and the filter may be configured to block the flow of particulate matter.
In yet another aspect of the present disclosure, the receptacle may include an orifice extending through an outer wall thereof.
In another aspect of the present disclosure, the inflater may be threadably coupled with the receptacle such that in a first orientation the orifice is covered by a portion of the body and rotation of the inflater to a second orientation uncovers the orifice.
A method of expanding a balloon of a surgical access device according to an aspect of the present disclosure includes actuating a button of an inflater. The inflater is disposed in a receptacle of a collar that is coupled to a cannula tube. The method also includes piercing a membrane with a spike of a piston slidably positioned in a cap of the inflater where the membrane is disposed between a body of the inflater and the cap. Additionally, the method includes reacting a first compound disposed in the body with a second compound disposed in the cap and generating a gas. The method further includes expanding the balloon by communicating the gas from the inflater to the balloon via a groove in the cannula tube.
In aspects of the present disclosure, the surgical access device may include a spring disposed between the body and the cap. The spring may be configured to bias the piston towards a rest position. Actuating the button may include overcoming the bias of the spring.
In another aspect of the present disclosure, the first compound may be baking soda and the second compound may be citric acid. Reacting the first compound with the second compound may generate carbon dioxide gas.
In a further aspect of the present disclosure, the method may further include filtering particulate matter from the gas prior to expanding the balloon.
In yet another aspect of the present disclosure, the receptacle may have an orifice extending through an outer wall thereof and the inflater may be threadably coupled to the receptacle. The method may further include rotating the inflater between a first orientation in which the orifice is covered by a portion of the body and a second orientation in which the orifice is uncovered.
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate aspects and features of the disclosure and, together with the detailed description below, serve to further explain the disclosure, in which:
Aspects of the disclosure are described hereinbelow with reference to the accompanying drawings; however, it is to be understood that the disclosed aspects are merely exemplary of the disclosure and may be embodied in various forms. Well-known functions or constructions are not described in detail to avoid obscuring the disclosure in unnecessary detail. Therefore, specific structural and functional details disclosed herein are not to be interpreted as limiting, but merely as a basis for the claims and as a representative basis for teaching one skilled in the art to variously employ the disclosure in virtually any appropriately detailed structure.
Descriptions of technical features of an aspect of the disclosure should typically be considered as available and applicable to other similar features of another aspect of the disclosure. Accordingly, technical features described herein according to one aspect of the disclosure may be applicable to other aspects of the disclosure, and thus duplicative descriptions may be omitted herein. Like reference numerals may refer to like elements throughout the specification and drawings. For a detailed description of the structure and function of exemplary surgical access assemblies, reference may be made to U.S. Pat. Nos. 7,300,448; 7,691,089; and 8,926,508, the entire content of each of which is hereby incorporated by reference herein.
Initially, with reference to
Referring now to
Briefly referring to
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With additional reference to
Referring briefly to
With reference now to
As the orifices 74 of the receptacle 72 are blocked by the body 210 of the inflater 200, the only available flow path for the carbon dioxide gas G is through the pores 222 of the filter 220, through the channel 38 defined between the pocket 36 and the inner surface of the collar 70, along the groove 34 in the cannula tube 30, and into the expandable portion 64 of the balloon 60. Since the carbon dioxide gas G has a pressure greater than a pressure outside the surgical access device 100, the expandable portion 64 of the balloon 60 transitions from the collapsed configuration (
Persons skilled in the art will understand that the devices and methods specifically described herein and illustrated in the accompanying drawings are non-limiting. It is envisioned that the elements and features may be combined with the elements and features of another without departing from the scope of the disclosure. As well, one skilled in the art will appreciate further features and advantages of the disclosure.
Claims
1. A surgical access device comprising:
- a cannula tube;
- a collar coupled to the cannula tube in a proximal region thereof, the collar including a receptacle;
- a balloon attached to the cannula tube; and
- an inflater insertable into the receptacle, the inflater including: a body having a chamber, the chamber containing a first compound, a cap attached to one end of the body, the cap having a cavity containing a second compound, a membrane disposed between the body and the cap, the membrane configured to keep the first and second compounds separate, a button extending through an opening of the cap, and a piston coupled to the button, the piston including a spike extending away from the button, the piston translatable in the cap between a rest position and an actuated position, the actuated position defined by a portion of the spike penetrating the membrane such that the first compound interacts with the second compound generating a gas that is communicated to the balloon via a groove of the cannula tube.
2. The surgical access device according to claim 1, wherein the inflater further includes a spring configured to bias the piston towards the rest position.
3. The surgical access device according to claim 1, further including an O-ring disposed between the button and the cap.
4. The surgical access device according to claim 1, further including a filter attached to a distal end of the body, the filter configured to block the flow of particulate matter.
5. The surgical access device according to claim 1, wherein the receptacle includes an orifice extending through an outer wall thereof.
6. The surgical access device according to claim 5, wherein the inflater is threadably coupled with the receptacle such that in a first orientation the orifice is covered by a portion of the body and rotation of the inflater to a second orientation uncovers the orifice.
7. The surgical access device according to claim 1, wherein the first compound is baking soda, the second compound is citric acid, and the gas is carbon dioxide.
8. A surgical access device comprising:
- a cannula tube;
- a balloon coupled to the cannula tube, the balloon having an expandable portion located in a distal region thereof;
- a collar disposed in a proximal region of the cannula tube, the collar including a receptacle; and
- an inflater having: a body with a first end insertable into the receptacle, the body containing a first compound, a cap attached to a second end of the body, the cap containing a second compound, a membrane disposed between the body and the cap, a button having a portion thereof extending through an opening of the cap, and a piston having a spike, the piston coupled to the button and translatable along a longitudinal axis of the inflater, the piston translatable between a rest position and an actuated position, the actuated position defined by the spike piercing the membrane allowing the first and second compounds to react and generate a gas that is communicated to the expandable portion of the balloon.
9. The surgical access device according to claim 8, wherein the cannula tube includes a groove in an outer surface thereof, the groove fluidly coupling the expandable portion of the balloon and the collar.
10. The surgical access device according to claim 8, wherein the first compound is baking soda and the second compound is citric acid.
11. The surgical access device according to claim 10, wherein the first compound and the second compound react to produce carbon dioxide gas.
12. The surgical access device according to claim 8, further including a spring disposed between the body and the cap, the spring configured to bias the piston towards the rest position.
13. The surgical access device according to claim 8, further including a filter coupled to the first end of the body, the filter configured to block the flow of particulate matter.
14. The surgical access device according to claim 8, wherein the receptacle includes an orifice extending through an outer wall thereof.
15. The surgical access device according to claim 14, wherein the inflater is threadably coupled with the receptacle such that in a first orientation the orifice is covered by a portion of the body and rotation of the inflater to a second orientation uncovers the orifice.
16. A method of expanding a balloon of a surgical access device comprising:
- actuating a button of an inflater, the inflater disposed in a receptacle of a collar that is coupled to a cannula tube;
- piercing a membrane with a spike of a piston slidably positioned in a cap of the inflater, the membrane disposed between a body of the inflater and the cap;
- reacting a first compound disposed in the body with a second compound disposed in the cap and generating a gas; and
- expanding the balloon by communicating the gas from the inflater to the balloon via a groove in the cannula tube.
17. The method according to claim 16, wherein the surgical access device includes a spring disposed between the body and the cap, the spring configured to bias the piston towards a rest position, and actuating the button includes overcoming the bias of the spring.
18. The method according to claim 16, wherein the first compound is baking soda, the second compound is citric acid, and reacting the first compound with the second compound generates carbon dioxide gas.
19. The method according claim 16, further comprising filtering particulate matter from the gas prior to expanding the balloon.
20. The method according to claim 16, wherein the receptacle has an orifice extending through an outer wall thereof and the inflater is threadably coupled to the receptacle, the method further comprising rotating the inflater between a first orientation in which the orifice is covered by a portion of the body and a second orientation in which the orifice is uncovered.
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Type: Grant
Filed: Apr 13, 2021
Date of Patent: Sep 12, 2023
Patent Publication Number: 20220323107
Assignee: Covidien LP (Mansfield, MA)
Inventors: Kevin M. Desjardin (Prospect, CT), Astley C. Lobo (West Haven, CT)
Primary Examiner: Jan Christopher L Merene
Application Number: 17/229,243
International Classification: A61B 17/34 (20060101); A61B 17/00 (20060101);